[linux-block.git] / drivers / regulator / tps65218-regulator.c

/*
 * tps65218-regulator.c
 *
 * Regulator driver for TPS65218 PMIC
 *
 * Copyright (C) 2014 Texas Instruments Incorporated - https://www.ti.com/
 *
 * This program is free software; you can redistribute it and/or
 * modify it under the terms of the GNU General Public License version 2 as
 * published by the Free Software Foundation.
 *
 * This program is distributed "as is" WITHOUT ANY WARRANTY of any
 * kind, whether expressed or implied; without even the implied warranty
 * of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 * GNU General Public License version 2 for more details.
 */

#include <linux/kernel.h>
#include <linux/module.h>
#include <linux/device.h>
#include <linux/init.h>
#include <linux/err.h>
#include <linux/platform_device.h>
#include <linux/of_device.h>
#include <linux/regmap.h>
#include <linux/regulator/of_regulator.h>
#include <linux/regulator/driver.h>
#include <linux/regulator/machine.h>
#include <linux/mfd/tps65218.h>

#define TPS65218_REGULATOR(_name, _of, _id, _type, _ops, _n, _vr, _vm, _er, \
			   _em, _cr, _cm, _lr, _nlr, _delay, _fuv, _sr, _sm, \
			   _ct, _ncl) \
	{							\
		.name			= _name,		\
		.of_match		= _of,			\
		.id			= _id,			\
		.ops			= &_ops,		\
		.n_voltages		= _n,			\
		.type			= _type,	\
		.owner			= THIS_MODULE,		\
		.vsel_reg		= _vr,			\
		.vsel_mask		= _vm,			\
		.csel_reg		= _cr,			\
		.csel_mask		= _cm,			\
		.curr_table		= _ct,			\
		.n_current_limits	= _ncl,			\
		.enable_reg		= _er,			\
		.enable_mask		= _em,			\
		.volt_table		= NULL,			\
		.linear_ranges		= _lr,			\
		.n_linear_ranges	= _nlr,			\
		.ramp_delay		= _delay,		\
		.fixed_uV		= _fuv,			\
		.bypass_reg	= _sr,				\
		.bypass_mask	= _sm,				\
	}							\

static const struct linear_range dcdc1_dcdc2_ranges[] = {
	REGULATOR_LINEAR_RANGE(850000, 0x0, 0x32, 10000),
	REGULATOR_LINEAR_RANGE(1375000, 0x33, 0x3f, 25000),
};

static const struct linear_range ldo1_dcdc3_ranges[] = {
	REGULATOR_LINEAR_RANGE(900000, 0x0, 0x1a, 25000),
	REGULATOR_LINEAR_RANGE(1600000, 0x1b, 0x3f, 50000),
};

static const struct linear_range dcdc4_ranges[] = {
	REGULATOR_LINEAR_RANGE(1175000, 0x0, 0xf, 25000),
	REGULATOR_LINEAR_RANGE(1600000, 0x10, 0x34, 50000),
};

static int tps65218_pmic_set_voltage_sel(struct regulator_dev *dev,
					 unsigned selector)
{
	int ret;
	struct tps65218 *tps = rdev_get_drvdata(dev);
	unsigned int rid = rdev_get_id(dev);

	/* Set the voltage based on vsel value and write protect level is 2 */
	ret = tps65218_set_bits(tps, dev->desc->vsel_reg, dev->desc->vsel_mask,
				selector, TPS65218_PROTECT_L1);

	/* Set GO bit for DCDC1/2 to initiate voltage transistion */
	switch (rid) {
	case TPS65218_DCDC_1:
	case TPS65218_DCDC_2:
		ret = tps65218_set_bits(tps, TPS65218_REG_CONTRL_SLEW_RATE,
					TPS65218_SLEW_RATE_GO,
					TPS65218_SLEW_RATE_GO,
					TPS65218_PROTECT_L1);
		break;
	}

	return ret;
}

static int tps65218_pmic_enable(struct regulator_dev *dev)
{
	struct tps65218 *tps = rdev_get_drvdata(dev);
	int rid = rdev_get_id(dev);

	if (rid < TPS65218_DCDC_1 || rid > TPS65218_LDO_1)
		return -EINVAL;

	/* Enable the regulator and password protection is level 1 */
	return tps65218_set_bits(tps, dev->desc->enable_reg,
				 dev->desc->enable_mask, dev->desc->enable_mask,
				 TPS65218_PROTECT_L1);
}

static int tps65218_pmic_disable(struct regulator_dev *dev)
{
	struct tps65218 *tps = rdev_get_drvdata(dev);
	int rid = rdev_get_id(dev);

	if (rid < TPS65218_DCDC_1 || rid > TPS65218_LDO_1)
		return -EINVAL;

	/* Disable the regulator and password protection is level 1 */
	return tps65218_clear_bits(tps, dev->desc->enable_reg,
				   dev->desc->enable_mask, TPS65218_PROTECT_L1);
}

static int tps65218_pmic_set_suspend_enable(struct regulator_dev *dev)
{
	struct tps65218 *tps = rdev_get_drvdata(dev);
	unsigned int rid = rdev_get_id(dev);

	if (rid > TPS65218_LDO_1)
		return -EINVAL;

	return tps65218_clear_bits(tps, dev->desc->bypass_reg,
				   dev->desc->bypass_mask,
				   TPS65218_PROTECT_L1);
}

static int tps65218_pmic_set_suspend_disable(struct regulator_dev *dev)
{
	struct tps65218 *tps = rdev_get_drvdata(dev);
	unsigned int rid = rdev_get_id(dev);

	if (rid > TPS65218_LDO_1)
		return -EINVAL;

	/*
	 * Certain revisions of TPS65218 will need to have DCDC3 regulator
	 * enabled always, otherwise an immediate system reboot will occur
	 * during poweroff.
	 */
	if (rid == TPS65218_DCDC_3 && tps->rev == TPS65218_REV_2_1)
		return 0;

	if (!tps->strobes[rid]) {
		if (rid == TPS65218_DCDC_3)
			tps->strobes[rid] = 3;
		else
			return -EINVAL;
	}

	return tps65218_set_bits(tps, dev->desc->bypass_reg,
				 dev->desc->bypass_mask,
				 tps->strobes[rid], TPS65218_PROTECT_L1);
}

/* Operations permitted on DCDC1, DCDC2 */
static const struct regulator_ops tps65218_dcdc12_ops = {
	.is_enabled		= regulator_is_enabled_regmap,
	.enable			= tps65218_pmic_enable,
	.disable		= tps65218_pmic_disable,
	.get_voltage_sel	= regulator_get_voltage_sel_regmap,
	.set_voltage_sel	= tps65218_pmic_set_voltage_sel,
	.list_voltage		= regulator_list_voltage_linear_range,
	.map_voltage		= regulator_map_voltage_linear_range,
	.set_voltage_time_sel	= regulator_set_voltage_time_sel,
	.set_suspend_enable	= tps65218_pmic_set_suspend_enable,
	.set_suspend_disable	= tps65218_pmic_set_suspend_disable,
};

/* Operations permitted on DCDC3, DCDC4 and LDO1 */
static const struct regulator_ops tps65218_ldo1_dcdc34_ops = {
	.is_enabled		= regulator_is_enabled_regmap,
	.enable			= tps65218_pmic_enable,
	.disable		= tps65218_pmic_disable,
	.get_voltage_sel	= regulator_get_voltage_sel_regmap,
	.set_voltage_sel	= tps65218_pmic_set_voltage_sel,
	.list_voltage		= regulator_list_voltage_linear_range,
	.map_voltage		= regulator_map_voltage_linear_range,
	.set_suspend_enable	= tps65218_pmic_set_suspend_enable,
	.set_suspend_disable	= tps65218_pmic_set_suspend_disable,
};

static const unsigned int ls3_currents[] = { 100000, 200000, 500000, 1000000 };

static int tps65218_pmic_set_input_current_lim(struct regulator_dev *dev,
					       int lim_uA)
{
	unsigned int index = 0;
	unsigned int num_currents = ARRAY_SIZE(ls3_currents);
	struct tps65218 *tps = rdev_get_drvdata(dev);

	while (index < num_currents && ls3_currents[index] != lim_uA)
		index++;

	if (index == num_currents)
		return -EINVAL;

	return tps65218_set_bits(tps, dev->desc->csel_reg, dev->desc->csel_mask,
				 index << __builtin_ctz(dev->desc->csel_mask),
				 TPS65218_PROTECT_L1);
}

static int tps65218_pmic_set_current_limit(struct regulator_dev *dev,
					   int min_uA, int max_uA)
{
	int index = 0;
	unsigned int num_currents = ARRAY_SIZE(ls3_currents);
	struct tps65218 *tps = rdev_get_drvdata(dev);

	while (index < num_currents && ls3_currents[index] <= max_uA)
		index++;

	index--;

	if (index < 0 || ls3_currents[index] < min_uA)
		return -EINVAL;

	return tps65218_set_bits(tps, dev->desc->csel_reg, dev->desc->csel_mask,
				 index << __builtin_ctz(dev->desc->csel_mask),
				 TPS65218_PROTECT_L1);
}

static const struct regulator_ops tps65218_ls23_ops = {
	.is_enabled		= regulator_is_enabled_regmap,
	.enable			= tps65218_pmic_enable,
	.disable		= tps65218_pmic_disable,
	.set_input_current_limit = tps65218_pmic_set_input_current_lim,
	.set_current_limit	= tps65218_pmic_set_current_limit,
	.get_current_limit	= regulator_get_current_limit_regmap,
};

/* Operations permitted on DCDC5, DCDC6 */
static const struct regulator_ops tps65218_dcdc56_pmic_ops = {
	.is_enabled		= regulator_is_enabled_regmap,
	.enable			= tps65218_pmic_enable,
	.disable		= tps65218_pmic_disable,
	.set_suspend_enable	= tps65218_pmic_set_suspend_enable,
	.set_suspend_disable	= tps65218_pmic_set_suspend_disable,
};

static const struct regulator_desc regulators[] = {
	TPS65218_REGULATOR("DCDC1", "regulator-dcdc1", TPS65218_DCDC_1,
			   REGULATOR_VOLTAGE, tps65218_dcdc12_ops, 64,
			   TPS65218_REG_CONTROL_DCDC1,
			   TPS65218_CONTROL_DCDC1_MASK, TPS65218_REG_ENABLE1,
			   TPS65218_ENABLE1_DC1_EN, 0, 0, dcdc1_dcdc2_ranges,
			   2, 4000, 0, TPS65218_REG_SEQ3,
			   TPS65218_SEQ3_DC1_SEQ_MASK, NULL, 0),
	TPS65218_REGULATOR("DCDC2", "regulator-dcdc2", TPS65218_DCDC_2,
			   REGULATOR_VOLTAGE, tps65218_dcdc12_ops, 64,
			   TPS65218_REG_CONTROL_DCDC2,
			   TPS65218_CONTROL_DCDC2_MASK, TPS65218_REG_ENABLE1,
			   TPS65218_ENABLE1_DC2_EN, 0, 0, dcdc1_dcdc2_ranges,
			   2, 4000, 0, TPS65218_REG_SEQ3,
			   TPS65218_SEQ3_DC2_SEQ_MASK, NULL, 0),
	TPS65218_REGULATOR("DCDC3", "regulator-dcdc3", TPS65218_DCDC_3,
			   REGULATOR_VOLTAGE, tps65218_ldo1_dcdc34_ops, 64,
			   TPS65218_REG_CONTROL_DCDC3,
			   TPS65218_CONTROL_DCDC3_MASK, TPS65218_REG_ENABLE1,
			   TPS65218_ENABLE1_DC3_EN, 0, 0, ldo1_dcdc3_ranges, 2,
			   0, 0, TPS65218_REG_SEQ4, TPS65218_SEQ4_DC3_SEQ_MASK,
			   NULL, 0),
	TPS65218_REGULATOR("DCDC4", "regulator-dcdc4", TPS65218_DCDC_4,
			   REGULATOR_VOLTAGE, tps65218_ldo1_dcdc34_ops, 53,
			   TPS65218_REG_CONTROL_DCDC4,
			   TPS65218_CONTROL_DCDC4_MASK, TPS65218_REG_ENABLE1,
			   TPS65218_ENABLE1_DC4_EN, 0, 0, dcdc4_ranges, 2,
			   0, 0, TPS65218_REG_SEQ4, TPS65218_SEQ4_DC4_SEQ_MASK,
			   NULL, 0),
	TPS65218_REGULATOR("DCDC5", "regulator-dcdc5", TPS65218_DCDC_5,
			   REGULATOR_VOLTAGE, tps65218_dcdc56_pmic_ops, 1, -1,
			   -1, TPS65218_REG_ENABLE1, TPS65218_ENABLE1_DC5_EN, 0,
			   0, NULL, 0, 0, 1000000, TPS65218_REG_SEQ5,
			   TPS65218_SEQ5_DC5_SEQ_MASK, NULL, 0),
	TPS65218_REGULATOR("DCDC6", "regulator-dcdc6", TPS65218_DCDC_6,
			   REGULATOR_VOLTAGE, tps65218_dcdc56_pmic_ops, 1, -1,
			   -1, TPS65218_REG_ENABLE1, TPS65218_ENABLE1_DC6_EN, 0,
			   0, NULL, 0, 0, 1800000, TPS65218_REG_SEQ5,
			   TPS65218_SEQ5_DC6_SEQ_MASK, NULL, 0),
	TPS65218_REGULATOR("LDO1", "regulator-ldo1", TPS65218_LDO_1,
			   REGULATOR_VOLTAGE, tps65218_ldo1_dcdc34_ops, 64,
			   TPS65218_REG_CONTROL_LDO1,
			   TPS65218_CONTROL_LDO1_MASK, TPS65218_REG_ENABLE2,
			   TPS65218_ENABLE2_LDO1_EN, 0, 0, ldo1_dcdc3_ranges,
			   2, 0, 0, TPS65218_REG_SEQ6,
			   TPS65218_SEQ6_LDO1_SEQ_MASK, NULL, 0),
	TPS65218_REGULATOR("LS2", "regulator-ls2", TPS65218_LS_2,
			   REGULATOR_CURRENT, tps65218_ls23_ops, 0, 0, 0,
			   TPS65218_REG_ENABLE2, TPS65218_ENABLE2_LS2_EN,
			   TPS65218_REG_CONFIG2, TPS65218_CONFIG2_LS2ILIM_MASK,
			   NULL, 0, 0, 0, 0, 0, ls3_currents,
			   ARRAY_SIZE(ls3_currents)),
	TPS65218_REGULATOR("LS3", "regulator-ls3", TPS65218_LS_3,
			   REGULATOR_CURRENT, tps65218_ls23_ops, 0, 0, 0,
			   TPS65218_REG_ENABLE2, TPS65218_ENABLE2_LS3_EN,
			   TPS65218_REG_CONFIG2, TPS65218_CONFIG2_LS3ILIM_MASK,
			   NULL, 0, 0, 0, 0, 0, ls3_currents,
			   ARRAY_SIZE(ls3_currents)),
};

static int tps65218_regulator_probe(struct platform_device *pdev)
{
	struct tps65218 *tps = dev_get_drvdata(pdev->dev.parent);
	struct regulator_dev *rdev;
	struct regulator_config config = { };
	int i, ret;
	unsigned int val;

	config.dev = &pdev->dev;
	config.dev->of_node = tps->dev->of_node;
	config.driver_data = tps;
	config.regmap = tps->regmap;

	/* Allocate memory for strobes */
	tps->strobes = devm_kcalloc(&pdev->dev,
				    TPS65218_NUM_REGULATOR, sizeof(u8),
				    GFP_KERNEL);
	if (!tps->strobes)
		return -ENOMEM;

	for (i = 0; i < ARRAY_SIZE(regulators); i++) {
		rdev = devm_regulator_register(&pdev->dev, &regulators[i],
					       &config);
		if (IS_ERR(rdev)) {
			dev_err(tps->dev, "failed to register %s regulator\n",
				pdev->name);
			return PTR_ERR(rdev);
		}

		ret = regmap_read(tps->regmap, regulators[i].bypass_reg, &val);
		if (ret)
			return ret;

		tps->strobes[i] = val & regulators[i].bypass_mask;
	}

	return 0;
}

static const struct platform_device_id tps65218_regulator_id_table[] = {
	{ "tps65218-regulator", },
	{ /* sentinel */ }
};
MODULE_DEVICE_TABLE(platform, tps65218_regulator_id_table);

static struct platform_driver tps65218_regulator_driver = {
	.driver = {
		.name = "tps65218-pmic",
	},
	.probe = tps65218_regulator_probe,
	.id_table = tps65218_regulator_id_table,
};

module_platform_driver(tps65218_regulator_driver);

MODULE_AUTHOR("J Keerthy <j-keerthy@ti.com>");
MODULE_DESCRIPTION("TPS65218 voltage regulator driver");
MODULE_ALIAS("platform:tps65218-pmic");
MODULE_LICENSE("GPL v2");
Commit	Line	Data
90e7d526 K	1	/*
	2	* tps65218-regulator.c
	3	*
	4	* Regulator driver for TPS65218 PMIC
	5	*
2ca76b3e	6	* Copyright (C) 2014 Texas Instruments Incorporated - https://www.ti.com/
90e7d526 K	7	*
	8	* This program is free software; you can redistribute it and/or
	9	* modify it under the terms of the GNU General Public License version 2 as
	10	* published by the Free Software Foundation.
	11	*
	12	* This program is distributed "as is" WITHOUT ANY WARRANTY of any
	13	* kind, whether expressed or implied; without even the implied warranty
	14	* of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
	15	* GNU General Public License version 2 for more details.
	16	*/
	17
	18	#include <linux/kernel.h>
	19	#include <linux/module.h>
	20	#include <linux/device.h>
	21	#include <linux/init.h>
	22	#include <linux/err.h>
	23	#include <linux/platform_device.h>
	24	#include <linux/of_device.h>
0aced355	25	#include <linux/regmap.h>
90e7d526 K	26	#include <linux/regulator/of_regulator.h>
	27	#include <linux/regulator/driver.h>
	28	#include <linux/regulator/machine.h>
	29	#include <linux/mfd/tps65218.h>
	30
2dc49403	31	#define TPS65218_REGULATOR(_name, _of, _id, _type, _ops, _n, _vr, _vm, _er, \
7cfcecfb AL	32	_em, _cr, _cm, _lr, _nlr, _delay, _fuv, _sr, _sm, \
7cfcecfb AL	33	_ct, _ncl) \
90e7d526 K	34	{ \
90e7d526 K	35	.name = _name, \
2dc49403	36	.of_match = _of, \
90e7d526 K	37	.id = _id, \
	38	.ops = &_ops, \
	39	.n_voltages = _n, \
c0ea88b8	40	.type = _type, \
90e7d526 K	41	.owner = THIS_MODULE, \
	42	.vsel_reg = _vr, \
	43	.vsel_mask = _vm, \
c0ea88b8 NK	44	.csel_reg = _cr, \
c0ea88b8 NK	45	.csel_mask = _cm, \
7cfcecfb AL	46	.curr_table = _ct, \
7cfcecfb AL	47	.n_current_limits = _ncl, \
90e7d526 K	48	.enable_reg = _er, \
90e7d526 K	49	.enable_mask = _em, \
dd648ef2	50	.volt_table = NULL, \
90e7d526 K	51	.linear_ranges = _lr, \
90e7d526 K	52	.n_linear_ranges = _nlr, \
5ab9be42	53	.ramp_delay = _delay, \
b9a0d359 TK	54	.fixed_uV = _fuv, \
	55	.bypass_reg = _sr, \
	56	.bypass_mask = _sm, \
90e7d526 K	57	} \
90e7d526 K	58
60ab7f41	59	static const struct linear_range dcdc1_dcdc2_ranges[] = {
90e7d526 K	60	REGULATOR_LINEAR_RANGE(850000, 0x0, 0x32, 10000),
	61	REGULATOR_LINEAR_RANGE(1375000, 0x33, 0x3f, 25000),
	62	};
	63
60ab7f41	64	static const struct linear_range ldo1_dcdc3_ranges[] = {
90e7d526 K	65	REGULATOR_LINEAR_RANGE(900000, 0x0, 0x1a, 25000),
	66	REGULATOR_LINEAR_RANGE(1600000, 0x1b, 0x3f, 50000),
	67	};
	68
60ab7f41	69	static const struct linear_range dcdc4_ranges[] = {
90e7d526	70	REGULATOR_LINEAR_RANGE(1175000, 0x0, 0xf, 25000),
42ab0f39	71	REGULATOR_LINEAR_RANGE(1600000, 0x10, 0x34, 50000),
90e7d526 K	72	};
90e7d526 K	73
90e7d526 K	74	static int tps65218_pmic_set_voltage_sel(struct regulator_dev *dev,
	75	unsigned selector)
	76	{
	77	int ret;
	78	struct tps65218 *tps = rdev_get_drvdata(dev);
	79	unsigned int rid = rdev_get_id(dev);
	80
	81	/* Set the voltage based on vsel value and write protect level is 2 */
	82	ret = tps65218_set_bits(tps, dev->desc->vsel_reg, dev->desc->vsel_mask,
	83	selector, TPS65218_PROTECT_L1);
	84
	85	/* Set GO bit for DCDC1/2 to initiate voltage transistion */
	86	switch (rid) {
	87	case TPS65218_DCDC_1:
	88	case TPS65218_DCDC_2:
	89	ret = tps65218_set_bits(tps, TPS65218_REG_CONTRL_SLEW_RATE,
	90	TPS65218_SLEW_RATE_GO,
	91	TPS65218_SLEW_RATE_GO,
	92	TPS65218_PROTECT_L1);
	93	break;
	94	}
	95
	96	return ret;
	97	}
	98
	99	static int tps65218_pmic_enable(struct regulator_dev *dev)
	100	{
	101	struct tps65218 *tps = rdev_get_drvdata(dev);
5f986f7c	102	int rid = rdev_get_id(dev);
90e7d526 K	103
	104	if (rid < TPS65218_DCDC_1 \|\| rid > TPS65218_LDO_1)
	105	return -EINVAL;
	106
	107	/* Enable the regulator and password protection is level 1 */
	108	return tps65218_set_bits(tps, dev->desc->enable_reg,
	109	dev->desc->enable_mask, dev->desc->enable_mask,
	110	TPS65218_PROTECT_L1);
	111	}
	112
	113	static int tps65218_pmic_disable(struct regulator_dev *dev)
	114	{
	115	struct tps65218 *tps = rdev_get_drvdata(dev);
5f986f7c	116	int rid = rdev_get_id(dev);
90e7d526 K	117
	118	if (rid < TPS65218_DCDC_1 \|\| rid > TPS65218_LDO_1)
	119	return -EINVAL;
	120
	121	/* Disable the regulator and password protection is level 1 */
	122	return tps65218_clear_bits(tps, dev->desc->enable_reg,
	123	dev->desc->enable_mask, TPS65218_PROTECT_L1);
	124	}
	125
b9a0d359 TK	126	static int tps65218_pmic_set_suspend_enable(struct regulator_dev *dev)
	127	{
	128	struct tps65218 *tps = rdev_get_drvdata(dev);
	129	unsigned int rid = rdev_get_id(dev);
	130
02d88863	131	if (rid > TPS65218_LDO_1)
b9a0d359 TK	132	return -EINVAL;
	133
	134	return tps65218_clear_bits(tps, dev->desc->bypass_reg,
	135	dev->desc->bypass_mask,
	136	TPS65218_PROTECT_L1);
	137	}
	138
	139	static int tps65218_pmic_set_suspend_disable(struct regulator_dev *dev)
	140	{
	141	struct tps65218 *tps = rdev_get_drvdata(dev);
	142	unsigned int rid = rdev_get_id(dev);
	143
02d88863	144	if (rid > TPS65218_LDO_1)
b9a0d359 TK	145	return -EINVAL;
b9a0d359 TK	146
23a34f9d TK	147	/*
	148	* Certain revisions of TPS65218 will need to have DCDC3 regulator
	149	* enabled always, otherwise an immediate system reboot will occur
	150	* during poweroff.
	151	*/
	152	if (rid == TPS65218_DCDC_3 && tps->rev == TPS65218_REV_2_1)
	153	return 0;
	154
2dc49403	155	if (!tps->strobes[rid]) {
3fb2ef11	156	if (rid == TPS65218_DCDC_3)
efeb88c6	157	tps->strobes[rid] = 3;
3fb2ef11 TK	158	else
	159	return -EINVAL;
	160	}
b9a0d359 TK	161
	162	return tps65218_set_bits(tps, dev->desc->bypass_reg,
	163	dev->desc->bypass_mask,
2dc49403	164	tps->strobes[rid], TPS65218_PROTECT_L1);
b9a0d359 TK	165	}
b9a0d359 TK	166
90e7d526	167	/* Operations permitted on DCDC1, DCDC2 */
d1030b43	168	static const struct regulator_ops tps65218_dcdc12_ops = {
90e7d526 K	169	.is_enabled = regulator_is_enabled_regmap,
	170	.enable = tps65218_pmic_enable,
	171	.disable = tps65218_pmic_disable,
	172	.get_voltage_sel = regulator_get_voltage_sel_regmap,
	173	.set_voltage_sel = tps65218_pmic_set_voltage_sel,
	174	.list_voltage = regulator_list_voltage_linear_range,
	175	.map_voltage = regulator_map_voltage_linear_range,
5ab9be42	176	.set_voltage_time_sel = regulator_set_voltage_time_sel,
b9a0d359 TK	177	.set_suspend_enable = tps65218_pmic_set_suspend_enable,
b9a0d359 TK	178	.set_suspend_disable = tps65218_pmic_set_suspend_disable,
90e7d526 K	179	};
	180
	181	/* Operations permitted on DCDC3, DCDC4 and LDO1 */
d1030b43	182	static const struct regulator_ops tps65218_ldo1_dcdc34_ops = {
90e7d526 K	183	.is_enabled = regulator_is_enabled_regmap,
	184	.enable = tps65218_pmic_enable,
	185	.disable = tps65218_pmic_disable,
	186	.get_voltage_sel = regulator_get_voltage_sel_regmap,
	187	.set_voltage_sel = tps65218_pmic_set_voltage_sel,
	188	.list_voltage = regulator_list_voltage_linear_range,
	189	.map_voltage = regulator_map_voltage_linear_range,
b9a0d359 TK	190	.set_suspend_enable = tps65218_pmic_set_suspend_enable,
b9a0d359 TK	191	.set_suspend_disable = tps65218_pmic_set_suspend_disable,
90e7d526 K	192	};
90e7d526 K	193
7cfcecfb	194	static const unsigned int ls3_currents[] = { 100000, 200000, 500000, 1000000 };
c0ea88b8 NK	195
	196	static int tps65218_pmic_set_input_current_lim(struct regulator_dev *dev,
	197	int lim_uA)
	198	{
	199	unsigned int index = 0;
	200	unsigned int num_currents = ARRAY_SIZE(ls3_currents);
	201	struct tps65218 *tps = rdev_get_drvdata(dev);
	202
	203	while (index < num_currents && ls3_currents[index] != lim_uA)
	204	index++;
	205
	206	if (index == num_currents)
	207	return -EINVAL;
	208
	209	return tps65218_set_bits(tps, dev->desc->csel_reg, dev->desc->csel_mask,
e5c8ba06 CH	210	index << __builtin_ctz(dev->desc->csel_mask),
e5c8ba06 CH	211	TPS65218_PROTECT_L1);
c0ea88b8 NK	212	}
	213
	214	static int tps65218_pmic_set_current_limit(struct regulator_dev *dev,
	215	int min_uA, int max_uA)
	216	{
	217	int index = 0;
	218	unsigned int num_currents = ARRAY_SIZE(ls3_currents);
	219	struct tps65218 *tps = rdev_get_drvdata(dev);
	220
71a64ba2	221	while (index < num_currents && ls3_currents[index] <= max_uA)
c0ea88b8 NK	222	index++;
	223
	224	index--;
	225
	226	if (index < 0 \|\| ls3_currents[index] < min_uA)
	227	return -EINVAL;
	228
	229	return tps65218_set_bits(tps, dev->desc->csel_reg, dev->desc->csel_mask,
e5c8ba06 CH	230	index << __builtin_ctz(dev->desc->csel_mask),
e5c8ba06 CH	231	TPS65218_PROTECT_L1);
c0ea88b8 NK	232	}
c0ea88b8 NK	233
d1030b43	234	static const struct regulator_ops tps65218_ls23_ops = {
c0ea88b8 NK	235	.is_enabled = regulator_is_enabled_regmap,
	236	.enable = tps65218_pmic_enable,
	237	.disable = tps65218_pmic_disable,
	238	.set_input_current_limit = tps65218_pmic_set_input_current_lim,
	239	.set_current_limit = tps65218_pmic_set_current_limit,
7cfcecfb	240	.get_current_limit = regulator_get_current_limit_regmap,
c0ea88b8 NK	241	};
c0ea88b8 NK	242
90e7d526	243	/* Operations permitted on DCDC5, DCDC6 */
d1030b43	244	static const struct regulator_ops tps65218_dcdc56_pmic_ops = {
90e7d526 K	245	.is_enabled = regulator_is_enabled_regmap,
	246	.enable = tps65218_pmic_enable,
	247	.disable = tps65218_pmic_disable,
b9a0d359 TK	248	.set_suspend_enable = tps65218_pmic_set_suspend_enable,
b9a0d359 TK	249	.set_suspend_disable = tps65218_pmic_set_suspend_disable,
90e7d526 K	250	};
	251
	252	static const struct regulator_desc regulators[] = {
2dc49403 K	253	TPS65218_REGULATOR("DCDC1", "regulator-dcdc1", TPS65218_DCDC_1,
	254	REGULATOR_VOLTAGE, tps65218_dcdc12_ops, 64,
	255	TPS65218_REG_CONTROL_DCDC1,
c0ea88b8 NK	256	TPS65218_CONTROL_DCDC1_MASK, TPS65218_REG_ENABLE1,
c0ea88b8 NK	257	TPS65218_ENABLE1_DC1_EN, 0, 0, dcdc1_dcdc2_ranges,
b9a0d359	258	2, 4000, 0, TPS65218_REG_SEQ3,
7cfcecfb	259	TPS65218_SEQ3_DC1_SEQ_MASK, NULL, 0),
2dc49403 K	260	TPS65218_REGULATOR("DCDC2", "regulator-dcdc2", TPS65218_DCDC_2,
	261	REGULATOR_VOLTAGE, tps65218_dcdc12_ops, 64,
	262	TPS65218_REG_CONTROL_DCDC2,
c0ea88b8 NK	263	TPS65218_CONTROL_DCDC2_MASK, TPS65218_REG_ENABLE1,
c0ea88b8 NK	264	TPS65218_ENABLE1_DC2_EN, 0, 0, dcdc1_dcdc2_ranges,
b9a0d359	265	2, 4000, 0, TPS65218_REG_SEQ3,
7cfcecfb	266	TPS65218_SEQ3_DC2_SEQ_MASK, NULL, 0),
2dc49403 K	267	TPS65218_REGULATOR("DCDC3", "regulator-dcdc3", TPS65218_DCDC_3,
2dc49403 K	268	REGULATOR_VOLTAGE, tps65218_ldo1_dcdc34_ops, 64,
c0ea88b8	269	TPS65218_REG_CONTROL_DCDC3,
90e7d526	270	TPS65218_CONTROL_DCDC3_MASK, TPS65218_REG_ENABLE1,
c0ea88b8	271	TPS65218_ENABLE1_DC3_EN, 0, 0, ldo1_dcdc3_ranges, 2,
7cfcecfb AL	272	0, 0, TPS65218_REG_SEQ4, TPS65218_SEQ4_DC3_SEQ_MASK,
7cfcecfb AL	273	NULL, 0),
2dc49403 K	274	TPS65218_REGULATOR("DCDC4", "regulator-dcdc4", TPS65218_DCDC_4,
2dc49403 K	275	REGULATOR_VOLTAGE, tps65218_ldo1_dcdc34_ops, 53,
c0ea88b8 NK	276	TPS65218_REG_CONTROL_DCDC4,
	277	TPS65218_CONTROL_DCDC4_MASK, TPS65218_REG_ENABLE1,
	278	TPS65218_ENABLE1_DC4_EN, 0, 0, dcdc4_ranges, 2,
7cfcecfb AL	279	0, 0, TPS65218_REG_SEQ4, TPS65218_SEQ4_DC4_SEQ_MASK,
7cfcecfb AL	280	NULL, 0),
2dc49403 K	281	TPS65218_REGULATOR("DCDC5", "regulator-dcdc5", TPS65218_DCDC_5,
	282	REGULATOR_VOLTAGE, tps65218_dcdc56_pmic_ops, 1, -1,
	283	-1, TPS65218_REG_ENABLE1, TPS65218_ENABLE1_DC5_EN, 0,
	284	0, NULL, 0, 0, 1000000, TPS65218_REG_SEQ5,
7cfcecfb	285	TPS65218_SEQ5_DC5_SEQ_MASK, NULL, 0),
2dc49403 K	286	TPS65218_REGULATOR("DCDC6", "regulator-dcdc6", TPS65218_DCDC_6,
	287	REGULATOR_VOLTAGE, tps65218_dcdc56_pmic_ops, 1, -1,
	288	-1, TPS65218_REG_ENABLE1, TPS65218_ENABLE1_DC6_EN, 0,
	289	0, NULL, 0, 0, 1800000, TPS65218_REG_SEQ5,
7cfcecfb	290	TPS65218_SEQ5_DC6_SEQ_MASK, NULL, 0),
2dc49403 K	291	TPS65218_REGULATOR("LDO1", "regulator-ldo1", TPS65218_LDO_1,
2dc49403 K	292	REGULATOR_VOLTAGE, tps65218_ldo1_dcdc34_ops, 64,
0eada6a1	293	TPS65218_REG_CONTROL_LDO1,
90e7d526	294	TPS65218_CONTROL_LDO1_MASK, TPS65218_REG_ENABLE2,
c0ea88b8	295	TPS65218_ENABLE2_LDO1_EN, 0, 0, ldo1_dcdc3_ranges,
b9a0d359	296	2, 0, 0, TPS65218_REG_SEQ6,
7cfcecfb	297	TPS65218_SEQ6_LDO1_SEQ_MASK, NULL, 0),
e5c8ba06 CH	298	TPS65218_REGULATOR("LS2", "regulator-ls2", TPS65218_LS_2,
	299	REGULATOR_CURRENT, tps65218_ls23_ops, 0, 0, 0,
	300	TPS65218_REG_ENABLE2, TPS65218_ENABLE2_LS2_EN,
	301	TPS65218_REG_CONFIG2, TPS65218_CONFIG2_LS2ILIM_MASK,
7cfcecfb AL	302	NULL, 0, 0, 0, 0, 0, ls3_currents,
7cfcecfb AL	303	ARRAY_SIZE(ls3_currents)),
2dc49403	304	TPS65218_REGULATOR("LS3", "regulator-ls3", TPS65218_LS_3,
e5c8ba06	305	REGULATOR_CURRENT, tps65218_ls23_ops, 0, 0, 0,
2dc49403 K	306	TPS65218_REG_ENABLE2, TPS65218_ENABLE2_LS3_EN,
2dc49403 K	307	TPS65218_REG_CONFIG2, TPS65218_CONFIG2_LS3ILIM_MASK,
7cfcecfb AL	308	NULL, 0, 0, 0, 0, 0, ls3_currents,
7cfcecfb AL	309	ARRAY_SIZE(ls3_currents)),
90e7d526 K	310	};
	311
	312	static int tps65218_regulator_probe(struct platform_device *pdev)
	313	{
	314	struct tps65218 *tps = dev_get_drvdata(pdev->dev.parent);
90e7d526	315	struct regulator_dev *rdev;
90e7d526	316	struct regulator_config config = { };
2dc49403	317	int i, ret;
b9a0d359	318	unsigned int val;
90e7d526	319
90e7d526	320	config.dev = &pdev->dev;
2dc49403	321	config.dev->of_node = tps->dev->of_node;
90e7d526 K	322	config.driver_data = tps;
	323	config.regmap = tps->regmap;
	324
2dc49403	325	/* Allocate memory for strobes */
a86854d0 KC	326	tps->strobes = devm_kcalloc(&pdev->dev,
	327	TPS65218_NUM_REGULATOR, sizeof(u8),
	328	GFP_KERNEL);
5597bfb4 AL	329	if (!tps->strobes)
5597bfb4 AL	330	return -ENOMEM;
90e7d526	331
2dc49403 K	332	for (i = 0; i < ARRAY_SIZE(regulators); i++) {
	333	rdev = devm_regulator_register(&pdev->dev, &regulators[i],
	334	&config);
	335	if (IS_ERR(rdev)) {
	336	dev_err(tps->dev, "failed to register %s regulator\n",
	337	pdev->name);
	338	return PTR_ERR(rdev);
	339	}
b9a0d359	340
2dc49403 K	341	ret = regmap_read(tps->regmap, regulators[i].bypass_reg, &val);
	342	if (ret)
	343	return ret;
	344
	345	tps->strobes[i] = val & regulators[i].bypass_mask;
	346	}
b9a0d359	347
90e7d526 K	348	return 0;
	349	}
	350
2dc49403 K	351	static const struct platform_device_id tps65218_regulator_id_table[] = {
	352	{ "tps65218-regulator", },
	353	{ /* sentinel */ }
	354	};
	355	MODULE_DEVICE_TABLE(platform, tps65218_regulator_id_table);
	356
90e7d526 K	357	static struct platform_driver tps65218_regulator_driver = {
	358	.driver = {
	359	.name = "tps65218-pmic",
90e7d526 K	360	},
90e7d526 K	361	.probe = tps65218_regulator_probe,
2dc49403	362	.id_table = tps65218_regulator_id_table,
90e7d526 K	363	};
	364
	365	module_platform_driver(tps65218_regulator_driver);
	366
	367	MODULE_AUTHOR("J Keerthy <j-keerthy@ti.com>");
	368	MODULE_DESCRIPTION("TPS65218 voltage regulator driver");
	369	MODULE_ALIAS("platform:tps65218-pmic");
	370	MODULE_LICENSE("GPL v2");